Past Paper

Question 1

Explain how the recycling of paper and plastic can benefit the environment

Answer 1

If we recycle paper, less trees need to be cut down which then means more are left for removing carbon dioxide
Animals habitats are not destroyed
Less space needed for landfill sites

Question 2

Benefits of recycling plastic

Answer 2

Plastic can be recycled so less demand for fossil fuels

More fossil fuels available for other uses

Question 3

Plant hormones can affect the way plants grow

Explain how growth hormones cause phototropism and gravitropism in plants (1)

Answer 3

RESPONDING TO A STIMULUS
Auxins cause phototropism as they are produced in the tip of the shoot
Phototropism happens in response to light
Shoot bends towards light

Question 4

Plant hormones can affect the way plants grow

Explain how growth hormones cause phototropism and gravitropism in plants (2)

Answer 4

Gravitropism is caused by gibberlin which happens in response to gravity
The auxins are produced in the root tip
It is a response to gravity

Question 5

What happens in a plant growth hormone?

Answer 5

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